Answer:
C. Smart card
Explanation:
Token: Token can be described as when something used to represent other i.e some kind of facts or quality.
Password: Password can be defined as a combination of secret words which used to login or gain access to anything.
Smart card: Smart card is of small-sized cards which contains some data and can process some tasks itself when used with a system.
Biometrics: Biometrics are mainly the fingerprints of anyone which is used for any purpose or as a password for something.
So the most appropriate answer is option C.
